If water waste is your concern with reverse osmosis process and saving water is your goal, Pentair™ GRO-36EN Reverse Osmosis encapsulated, semi-permeable membrane is a high efficiency, 36 Gallons Per Day (GPD) encapsulated reverse osmosis membrane that reduces water waste by nearly 30%.

Pentair Residential Membranes use an industry leading state-of-the art TLC (Thin Layer Composite) membrane providing high quality water for a broad range of water chemistries. Each membrane is required to meet our factory's strict performance requirements prior to shipment. Encapsulated membranes already come with quick connect fittings on the housing. These membranes use less waste water with a near 1:1 ratio.

Reverse Osmosis is the process by which water molecules are forced by your household water pressure through GRO-36EN semi-permeable membrane. Contaminants are rinsed to the drain with a reverse osmosis water purifying system, while your high quality drinking water is stored in the holding tank ready for drinking on demand.

Video below shows how 1:1 water ratio / high recovery rate works using Pentair GRO-36EN

FEATURING NEW 1:1 GRO-36EN 36 GPD PENTAIR MEMBRANE!

36 GPD - Gallons Per Day (GPD)

Double the recovery rate - 1:1 Water Ratio!

High rejection stability at high input TDS

TDS reduction of 93-98% of minerals, salts, contaminants in your potable water

Thin Layer Composite Membrane (TLC)

100% dry membrane maximizing shelf life

Available with or without a drain line flow control

Capillary style drain line flow control kits available and sized for each GRO mode supply.

Filters and membrane elements are not to be installed on microbiologically unsafe water supplies. TLC Membranes are not certified to sanitize water, remove cysts, bacteria, or viruses. Filter and membrane element performance can be affected by fluctuations in water quality

DRAIN LINE FLOW CONTROL KITS In order for this membrane to provide 1:1 water ratio, you need a flow restrictor.